Physicist Ernest Moniz was sworn in last week as U.S. Energy secretary, and wasted little time laying out his priorities. Along with a major speech on energy efficiency, as well as pronouncements about nuclear power and natural gas, he issued a blunt warning to any opponents or obfuscators of climate science: The jig is up. "Let me make it very clear that there is no ambiguity in terms of the scientific basis calling for a prudent response on climate change," he told a crowd of Energy Department employees May 21 following his swearing-in ceremony at DOE headquarters. "I am...